11622003361561 has 4 divisors (see below), whose sum is σ = 11785693549824. Its totient is φ = 11458313173300.

The previous prime is 11622003361489. The next prime is 11622003361567. The reversal of 11622003361561 is 16516330022611.

11622003361561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11622003361561 - 2⁹ = 11622003361049 is a prime.

It is a super-2 number, since 2×11622003361561² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11622003361561.

It is not an unprimeable number, because it can be changed into a prime (11622003361567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81845094025 + ... + 81845094166.

It is an arithmetic number, because the mean of its divisors is an integer number (2946423387456).

Almost surely, 2^{11622003361561} is an apocalyptic number.

It is an amenable number.

11622003361561 is a deficient number, since it is larger than the sum of its proper divisors (163690188263).

11622003361561 is an equidigital number, since it uses as much as digits as its factorization.

11622003361561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163690188262.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 11622003361561 in words is "eleven trillion, six hundred twenty-two billion, three million, three hundred sixty-one thousand, five hundred sixty-one".